Re: [PATCH] ptrace: s/parent/real_parent/ in binfmt_elf_fdpic.c

[Oleg Nesterov]

On 04/29, Oleg Nesterov wrote:
>
> -	prstatus->pr_ppid = task_pid_vnr(p->parent);
> +	prstatus->pr_ppid = task_pid_vnr(p->real_parent);
>  	prstatus->pr_pgrp = task_pgrp_vnr(p);

Hmm. Just noticed. What protects ->parent or ->real_parent ?

Looks like we need rcu_lock() around... The same in fs/binfmt_elf.c.
Will send another trivial patch (on top of this) tomorrow.

Oleg.

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